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[79.124.17.100]) by mx.google.com with ESMTP id r5-20020a50d685000000b004592497f96asi12942648edi.125.2022.10.19.00.27.26; Wed, 19 Oct 2022 00:27:27 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@spin-digital-com.20210112.gappssmtp.com header.s=20210112 header.b=cBDUklPM; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 2134868BD49; Wed, 19 Oct 2022 10:26:37 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-ed1-f51.google.com (mail-ed1-f51.google.com [209.85.208.51]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 48BA268BDD5 for ; Wed, 19 Oct 2022 10:26:29 +0300 (EEST) Received: by mail-ed1-f51.google.com with SMTP id u21so23878019edi.9 for ; Wed, 19 Oct 2022 00:26:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=spin-digital-com.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=8BsMW+iBZNt6M5NUtsbpOqdH+cV6vwz5FQSaMtm7W2M=; b=cBDUklPMZZjkBowaixnsRkhK/yJCzmQ1fq1VQsDtJVp4sN6tl1lApCiPk2qidPup+r HJNt9SXOaUN+wMi2z0Mc3CYnDNr6RIc1K6Y8Elkx1ef7x5E5CVlGBPCvpNROcssd9kWC 88U7E1o00Ef7f7G77vCv1RuHby99+TVQSqG/HLJHPTyDb4WuYNvU7GQ8DMU1CtQAVKZE 5DjUTgLOb9tydSs1J9HXVJmZrresJWntBCXNK6zCjnz9OvubO2CuVcrRSu1bN2IxW3Px M2b7Esfdxgd3YXJlcJb0HUgOxKUnIALnzuqzyMAYyi+I5qvHtib9vr8TSj70Qh080z1o 9djQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8BsMW+iBZNt6M5NUtsbpOqdH+cV6vwz5FQSaMtm7W2M=; b=IN9hQFWcbbjo3+vcofAnjI7xSU/VsL92vOozk6E4VlG7wwP2KHUE6c7hCWtU3RKmFb ZyIchpHFLCbHdF2FwHWCkuuiOIbFnST6vFn+JCqR55TbQaOyTcRRHEXudRMIkqUykQaG F1PEAT9+22ceFx9pEAOHc6CC4qXpCHCW1as3qmUKMw6KLgaCmDvOZSQnavLvOr0CxcV9 OCuKjOhaYcwf2z3IqoyXQ5tq2+WYs9g9iPRqjZxXiO+h9uFrkQPSGBNzwYTE4y471Fnn PEBM/TkTXgGNdmpmic9/ntoy8NBn3HyK8zJz+dsUMZH1f43iSpACbtNDyZS5zR2pO4Vr ADsg== X-Gm-Message-State: ACrzQf1hQiyWZysTKIPwacJcRsc9GA9PJ0GnfXDLLhQafc13droks2j0 73xGwHhrQbcdISgnDxLjalsJTdYHDSi7cA== X-Received: by 2002:a05:6402:5024:b0:440:e4ad:f7b6 with SMTP id p36-20020a056402502400b00440e4adf7b6mr6186415eda.358.1666164388180; Wed, 19 Oct 2022 00:26:28 -0700 (PDT) Received: from thomas-win.localdomain ([213.138.44.237]) by smtp.gmail.com with ESMTPSA id p5-20020a170906498500b0078b83968ad4sm8515150eju.24.2022.10.19.00.26.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Oct 2022 00:26:27 -0700 (PDT) From: thomas.ff@spin-digital.com To: ffmpeg-devel@ffmpeg.org Date: Wed, 19 Oct 2022 09:25:02 +0200 Message-Id: <20221019072508.23460-6-thomas.ff@spin-digital.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221019072508.23460-1-thomas.ff@spin-digital.com> References: <20221019072508.23460-1-thomas.ff@spin-digital.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v1 05/11] avcodec: add MP4 to annexb support for H266/VVC X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Thomas Siedel Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: GJV7Z1lDsNiG From: Thomas Siedel Add parser for VVC MP4 to Annex B byte stream format. Signed-off-by: Thomas Siedel --- configure | 1 + libavcodec/Makefile | 2 + libavcodec/bitstream_filters.c | 2 + libavcodec/h266_metadata_bsf.c | 145 ++++++++++++++ libavcodec/vvc_mp4toannexb_bsf.c | 318 +++++++++++++++++++++++++++++++ 5 files changed, 468 insertions(+) create mode 100644 libavcodec/h266_metadata_bsf.c create mode 100644 libavcodec/vvc_mp4toannexb_bsf.c diff --git a/configure b/configure index 13dca5cd9a..30df2cb0a4 100755 --- a/configure +++ b/configure @@ -3298,6 +3298,7 @@ mjpeg2jpeg_bsf_select="jpegtables" mpeg2_metadata_bsf_select="cbs_mpeg2" trace_headers_bsf_select="cbs" vp9_metadata_bsf_select="cbs_vp9" +vvc_metadata_bsf_select="cbs_h266" # external libraries aac_at_decoder_deps="audiotoolbox" diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 3850e316ac..53a8dc67cb 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -1222,6 +1222,8 @@ OBJS-$(CONFIG_VP9_METADATA_BSF) += vp9_metadata_bsf.o OBJS-$(CONFIG_VP9_RAW_REORDER_BSF) += vp9_raw_reorder_bsf.o OBJS-$(CONFIG_VP9_SUPERFRAME_BSF) += vp9_superframe_bsf.o OBJS-$(CONFIG_VP9_SUPERFRAME_SPLIT_BSF) += vp9_superframe_split_bsf.o +OBJS-$(CONFIG_VVC_METADATA_BSF) += h266_metadata_bsf.o +OBJS-$(CONFIG_VVC_MP4TOANNEXB_BSF) += vvc_mp4toannexb_bsf.o # thread libraries OBJS-$(HAVE_LIBC_MSVCRT) += file_open.o diff --git a/libavcodec/bitstream_filters.c b/libavcodec/bitstream_filters.c index a3bebefe5f..403884f3d7 100644 --- a/libavcodec/bitstream_filters.c +++ b/libavcodec/bitstream_filters.c @@ -64,6 +64,8 @@ extern const FFBitStreamFilter ff_vp9_metadata_bsf; extern const FFBitStreamFilter ff_vp9_raw_reorder_bsf; extern const FFBitStreamFilter ff_vp9_superframe_bsf; extern const FFBitStreamFilter ff_vp9_superframe_split_bsf; +extern const FFBitStreamFilter ff_vvc_mp4toannexb_bsf; +extern const FFBitStreamFilter ff_vvc_metadata_bsf; #include "libavcodec/bsf_list.c" diff --git a/libavcodec/h266_metadata_bsf.c b/libavcodec/h266_metadata_bsf.c new file mode 100644 index 0000000000..bc3c10f581 --- /dev/null +++ b/libavcodec/h266_metadata_bsf.c @@ -0,0 +1,145 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/common.h" +#include "libavutil/opt.h" + +#include "bsf.h" +#include "bsf_internal.h" +#include "cbs.h" +#include "cbs_bsf.h" +#include "cbs_h266.h" +#include "vvc.h" + +#define IS_SLICE(nut) (nut <= VVC_RASL_NUT || (nut >= VVC_IDR_W_RADL && nut <= VVC_GDR_NUT)) +#define IS_PH(nut) (nut == VVC_PH_NUT) + +typedef struct VVCMetadataContext { + CBSBSFContext common; + + H266RawAUD aud_nal; + + int aud; +} VVCMetadataContext; + +static int h266_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, + CodedBitstreamFragment *pu) +{ + VVCMetadataContext *ctx = bsf->priv_data; + int err, i; + + // If an AUD is present, it must be the first NAL unit. + if (pu->units[0].type == VVC_AUD_NUT) { + if (ctx->aud == BSF_ELEMENT_REMOVE) + ff_cbs_delete_unit(pu, 0); + } else { + if (ctx->aud == BSF_ELEMENT_INSERT) { + const H266RawSlice *first_slice = NULL; + const H266RawPH *ph = NULL; + H266RawAUD *aud = &ctx->aud_nal; + int pic_type = 0, temporal_id = 8, layer_id = 0; + for (i = 0; i < pu->nb_units; i++) { + const H266RawNALUnitHeader *nal = pu->units[i].content; + if (!nal) + continue; + if (nal->nuh_temporal_id_plus1 < temporal_id + 1) + temporal_id = nal->nuh_temporal_id_plus1 - 1; + if (IS_PH(nal->nal_unit_type)) { + ph = pu->units[i].content; + } else if(IS_SLICE(nal->nal_unit_type)) { + const H266RawSlice *slice = pu->units[i].content; + layer_id = nal->nuh_layer_id; + if (slice->header.sh_slice_type == VVC_SLICE_TYPE_B && + pic_type < 2) + pic_type = 2; + if (slice->header.sh_slice_type == VVC_SLICE_TYPE_P && + pic_type < 1) + pic_type = 1; + if (!first_slice) { + first_slice = slice; + if (first_slice->header.sh_picture_header_in_slice_header_flag) + ph = &first_slice->header.sh_picture_header; + else if (!ph) + break; + } + } + } + if (!ph) { + av_log(bsf, AV_LOG_ERROR, "no avaliable picture header"); + return AVERROR_INVALIDDATA; + } + + aud->nal_unit_header = (H266RawNALUnitHeader) { + .nal_unit_type = VVC_AUD_NUT, + .nuh_layer_id = layer_id, + .nuh_temporal_id_plus1 = temporal_id + 1, + }; + aud->aud_pic_type = pic_type; + aud->aud_irap_or_gdr_flag = ph->ph_gdr_or_irap_pic_flag; + + err = ff_cbs_insert_unit_content(pu, 0, VVC_AUD_NUT, aud, NULL); + if (err < 0) { + av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n"); + return err; + } + } + } + return 0; +} + +static const CBSBSFType h266_metadata_type = { + .codec_id = AV_CODEC_ID_VVC, + .fragment_name = "access unit", + .unit_name = "NAL unit", + .update_fragment = &h266_metadata_update_fragment, +}; + +static int vvc_metadata_init(AVBSFContext *bsf) +{ + return ff_cbs_bsf_generic_init(bsf, &h266_metadata_type); +} + +#define OFFSET(x) offsetof(VVCMetadataContext, x) +#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) +static const AVOption vvc_metadata_options[] = { + BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units", + aud, FLAGS), + + { NULL } +}; + +static const AVClass vvc_metadata_class = { + .class_name = "vvc_metadata_bsf", + .item_name = av_default_item_name, + .option = vvc_metadata_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static const enum AVCodecID vvc_metadata_codec_ids[] = { + AV_CODEC_ID_VVC, AV_CODEC_ID_NONE, +}; + +const FFBitStreamFilter ff_vvc_metadata_bsf = { + .p.name = "vvc_metadata", + .p.codec_ids = vvc_metadata_codec_ids, + .p.priv_class = &vvc_metadata_class, + .priv_data_size = sizeof(VVCMetadataContext), + .init = &vvc_metadata_init, + .close = &ff_cbs_bsf_generic_close, + .filter = &ff_cbs_bsf_generic_filter, +}; diff --git a/libavcodec/vvc_mp4toannexb_bsf.c b/libavcodec/vvc_mp4toannexb_bsf.c new file mode 100644 index 0000000000..d6415dba7b --- /dev/null +++ b/libavcodec/vvc_mp4toannexb_bsf.c @@ -0,0 +1,318 @@ +/* + * VVC MP4 to Annex B byte stream format filter + * Copyright (c) 2022, Thomas Siedel + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#include "libavutil/intreadwrite.h" +#include "libavutil/mem.h" + +#include "avcodec.h" +#include "bsf.h" +#include "bsf_internal.h" +#include "bytestream.h" +#include "vvc.h" + +#include "libavcodec/get_bits.h" + +#define MIN_VVCC_LENGTH 23 + +typedef struct VVCBSFContext { + uint8_t length_size; + int extradata_parsed; +} VVCBSFContext; + +static int vvc_extradata_to_annexb(AVBSFContext *ctx) +{ + GetByteContext gb; + int length_size, num_arrays, i, j; + int ret = 0; + int temp = 0; + int ptl_present; + + uint8_t *new_extradata = NULL; + size_t new_extradata_size = 0; + + int max_picture_width = 0; + int max_picture_height = 0; + int avg_frame_rate = 0; + + bytestream2_init(&gb, ctx->par_in->extradata, ctx->par_in->extradata_size); + temp = bytestream2_get_byte(&gb); + length_size = (( temp & 6) >> 1) + 1; + ptl_present = temp & 1; + if (ptl_present) { + int num_bytes_constraint_info; + int general_profile_idc; + int general_tier_flag; + int general_level_idc; + int ptl_frame_only_constraint_flag; + int ptl_multi_layer_enabled_flag; + int ptl_num_sub_profiles; + int temp3, temp4, temp5; + int temp2 = bytestream2_get_be16(&gb); + int ols_idx = (temp2 >> 7) & 0x1ff; + int num_sublayers = (temp2 >> 4) & 0x7; + int constant_frame_rate = (temp2 >> 2) & 0x3; + int chroma_format_idc = temp2 & 0x3; + int bit_depth_minus8 = (bytestream2_get_byte(&gb) >> 5) & 0x7; + av_log(ctx, AV_LOG_DEBUG, + "bit_depth_minus8 %d chroma_format_idc %d\n", bit_depth_minus8, chroma_format_idc); + av_log(ctx, AV_LOG_DEBUG, + "constant_frame_rate %d, ols_idx %d\n", constant_frame_rate, ols_idx); + // VvcPTLRecord(num_sublayers) native_ptl + temp3 = bytestream2_get_byte(&gb); + num_bytes_constraint_info = (temp3) & 0x3f; + temp4 = bytestream2_get_byte(&gb); + general_profile_idc = (temp4 >> 1) & 0x7f; + general_tier_flag = (temp4) & 1; + general_level_idc = bytestream2_get_byte(&gb); + av_log(ctx, AV_LOG_DEBUG, + "general_profile_idc %d, general_tier_flag %d, general_level_idc %d, num_sublayers %d num_bytes_constraint_info %d\n", general_profile_idc, general_tier_flag, general_level_idc, num_sublayers, num_bytes_constraint_info); + + temp5 = bytestream2_get_byte(&gb); + ptl_frame_only_constraint_flag = (temp5 >> 7) & 0x1; + ptl_multi_layer_enabled_flag = (temp5 >> 6) & 0x1; + for (i = 0; i < num_bytes_constraint_info-1; i++) { + // unsigned int(8*num_bytes_constraint_info - 2) general_constraint_info; + bytestream2_get_byte(&gb); + } + + av_log(ctx, AV_LOG_DEBUG, + "ptl_multi_layer_enabled_flag %d, ptl_frame_only_constraint_flag %d\n",ptl_multi_layer_enabled_flag, ptl_frame_only_constraint_flag); + + if( num_sublayers > 1 ) + { + int temp6 = bytestream2_get_byte(&gb); + uint8_t ptl_sublayer_level_present_flag[8] = {0}; + //uint8_t sublayer_level_idc[8] = {0}; + for (i=num_sublayers - 2; i >= 0; i--){ + ptl_sublayer_level_present_flag[i] = (temp6 >> (7 - (num_sublayers - 2 - i))) & 0x01; + } + // for (j=num_sublayers; j<=8 && num_sublayers > 1; j++) + // bit(1) ptl_reserved_zero_bit = 0; + for (i=num_sublayers-2; i >= 0; i--) + { + if (ptl_sublayer_level_present_flag[i]) { + //sublayer_level_idc[i] = bytestream2_get_byte(&gb); + } + } + } + + ptl_num_sub_profiles = bytestream2_get_byte(&gb); + for (j=0; j < ptl_num_sub_profiles; j++) { + // unsigned int(32) general_sub_profile_idc[j]; + bytestream2_get_be16(&gb); + bytestream2_get_be16(&gb); + } + + max_picture_width = bytestream2_get_be16(&gb); // unsigned_int(16) max_picture_width; + max_picture_height = bytestream2_get_be16(&gb); // unsigned_int(16) max_picture_height; + avg_frame_rate = bytestream2_get_be16(&gb); // unsigned int(16) avg_frame_rate; } + av_log(ctx, AV_LOG_DEBUG, + "max_picture_width %d, max_picture_height %d, avg_frame_rate %d\n", max_picture_width, max_picture_height, avg_frame_rate); + } + + num_arrays = bytestream2_get_byte(&gb); + + for (i = 0; i < num_arrays; i++) { + int cnt; + int type = bytestream2_get_byte(&gb) & 0x1f; + + if (type != VVC_OPI_NUT || type != VVC_DCI_NUT) + cnt = bytestream2_get_be16(&gb); + else + cnt = 1; + + av_log(ctx, AV_LOG_DEBUG, + "nalu_type %d cnt %d\n", type, cnt); + + if (!(type == VVC_VPS_NUT || type == VVC_SPS_NUT || type == VVC_PPS_NUT || + type == VVC_PREFIX_SEI_NUT || type == VVC_SUFFIX_SEI_NUT)) { + av_log(ctx, AV_LOG_ERROR, "Invalid NAL unit type in extradata: %d\n", type); + ret = AVERROR_INVALIDDATA; + goto fail; + } + + for (j = 0; j < cnt; j++) { + int nalu_len = bytestream2_get_be16(&gb); + + if (4 + AV_INPUT_BUFFER_PADDING_SIZE + nalu_len > SIZE_MAX - new_extradata_size) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + ret = av_reallocp(&new_extradata, new_extradata_size + nalu_len + 4 + AV_INPUT_BUFFER_PADDING_SIZE); + if (ret < 0) + goto fail; + + AV_WB32(new_extradata + new_extradata_size, 1); // add the startcode + bytestream2_get_buffer(&gb, new_extradata + new_extradata_size + 4, nalu_len); + new_extradata_size += 4 + nalu_len; + memset(new_extradata + new_extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); + } + } + + av_freep(&ctx->par_out->extradata); + ctx->par_out->extradata = new_extradata; + ctx->par_out->extradata_size = new_extradata_size; + + if (!new_extradata_size) + av_log(ctx, AV_LOG_WARNING, "No parameter sets in the extradata\n"); + + return length_size; +fail: + av_freep(&new_extradata); + return ret; +} + +static int vvc_mp4toannexb_init(AVBSFContext *ctx) +{ + VVCBSFContext *s = ctx->priv_data; + int ret; + + if (ctx->par_in->extradata_size < MIN_VVCC_LENGTH || + AV_RB24(ctx->par_in->extradata) == 1 || + AV_RB32(ctx->par_in->extradata) == 1) { + av_log(ctx, AV_LOG_VERBOSE, "The input looks like it is Annex B already\n"); + } else { + ret = vvc_extradata_to_annexb(ctx); + if (ret < 0) + return ret; + s->length_size = ret; + s->extradata_parsed = 1; + } + + return 0; +} + +static int vvc_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out) +{ + VVCBSFContext *s = ctx->priv_data; + AVPacket *in; + GetByteContext gb; + + int is_irap = 0; + int added_extra = 0; + int i, ret = 0; + + ret = ff_bsf_get_packet(ctx, &in); + if (ret < 0) + return ret; + + if (!s->extradata_parsed) { + av_packet_move_ref(out, in); + av_packet_free(&in); + return 0; + } + + bytestream2_init(&gb, in->data, in->size); + + /* check if this packet contains an IRAP. The extradata will need to be added before any potential PH_NUT */ + while (bytestream2_get_bytes_left(&gb)) { + uint32_t nalu_size = 0; + int nalu_type; + + if (bytestream2_get_bytes_left(&gb) < s->length_size) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + + for (i = 0; i < s->length_size; i++) + nalu_size = (nalu_size << 8) | bytestream2_get_byte(&gb); + + if (nalu_size < 2 || nalu_size > bytestream2_get_bytes_left(&gb)) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + + nalu_type = (bytestream2_peek_be16(&gb) >> 3) & 0x1f; + is_irap = nalu_type >= VVC_IDR_W_RADL && nalu_type <= VVC_RSV_IRAP_11; + if (is_irap) { + break; + } + bytestream2_seek(&gb, nalu_size, SEEK_CUR); + } + + bytestream2_seek(&gb, 0, SEEK_SET); + while (bytestream2_get_bytes_left(&gb)) { + uint32_t nalu_size = 0; + int nalu_type; + int add_extradata, extra_size, prev_size; + + if (bytestream2_get_bytes_left(&gb) < s->length_size) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + + for (i = 0; i < s->length_size; i++) + nalu_size = (nalu_size << 8) | bytestream2_get_byte(&gb); + + if (nalu_size < 2 || nalu_size > bytestream2_get_bytes_left(&gb)) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + + nalu_type = (bytestream2_peek_be16(&gb) >> 3) & 0x1f; + + /* prepend extradata to IRAP frames */ + add_extradata = is_irap && nalu_type != VVC_AUD_NUT && !added_extra; + extra_size = add_extradata * ctx->par_out->extradata_size; + added_extra |= add_extradata; + + if (FFMIN(INT_MAX, SIZE_MAX) < 4ULL + nalu_size + extra_size) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + + prev_size = out->size; + + ret = av_grow_packet(out, 4 + nalu_size + extra_size); + if (ret < 0) + goto fail; + + if (extra_size) + memcpy(out->data + prev_size, ctx->par_out->extradata, extra_size); + AV_WB32(out->data + prev_size + extra_size, 1); + bytestream2_get_buffer(&gb, out->data + prev_size + 4 + extra_size, nalu_size); + } + + ret = av_packet_copy_props(out, in); + if (ret < 0) + goto fail; + +fail: + if (ret < 0) + av_packet_unref(out); + av_packet_free(&in); + + return ret; +} + +static const enum AVCodecID codec_ids[] = { + AV_CODEC_ID_VVC, AV_CODEC_ID_NONE, +}; + +const FFBitStreamFilter ff_vvc_mp4toannexb_bsf = { + .p.name = "vvc_mp4toannexb", + .p.codec_ids = codec_ids, + .priv_data_size = sizeof(VVCBSFContext), + .init = vvc_mp4toannexb_init, + .filter = vvc_mp4toannexb_filter, +};